With massage, facials, waxing and other beauty treatments, Quan Spa at the Renaissance Bangkok Ratchaprasong Hotel offers an ideal setting for relaxation. Contact us by email. Should you have any question or require assistance, please contact us at [email protected] Upcoming events. ANANTARA RIVERSIDE BANGKOK RESORT. Set on the banks of the grand Chao Phraya River, Anantara Riverside Bangkok Resort is a thriving oasis offering a unique way to experience the City of Angels. Majestic palms swaying in the breeze. Spa treatments hidden within lush tropical gardens. Luxurious suites lit by the. Ancient Massage, Bangkok: See 10 reviews, articles, and 2 photos of Ancient Massage, ranked No on TripAdvisor among attractions in Bangkok.